People breed them for flyball mainly...they're designer flyball breeds...short (to bring the jump height down), but fast and powerful and flexible. It's been going on for as long as I've been in flyball...(over 10 years now). The first mixes I remember were Border-borders (BC and Border terrier)...but they weren't as fast. Now I'm seeing Border-whippets and such too. But they're taking such completely different dogs...to breed, it's just odd. But the fastest teams have them...so everyone needs one now!
I just don't get it
...they all claim that they find only good homes for them, but I'm still a rescue person at heart...and I've found great flyball dogs that way.
BTW, Matt...they're usually referred to as "Staffy-jacks" when it's a JRT/SBT mix.
Designer dogs in flyball...blog articlehttp://www-s3.sunshinerain.com/SureShot ... yball.html
Border staffy breeding:http://paintedstarsfarm.com/borderstaffy.cfm
Spring-loaded flyball team...scroll down for mixeshttp://www.springloaded-flyball.com/dogs.htm
Article mentioning flyball mixeshttp://www.cal.net/~pamgreen/designer_dogs_by_wood.html
"I don't have any idea if my dogs respect me or not, but they're greedy and I have their stuff." -- Patty Ruzzo
"Dogs don't want to control people. They want to control their own lives." --John Bradshaw